a:5:{i:0;s:6:"cityid";i:1;s:9:"city_name";i:2;s:9:"parent_id";s:3:"_pk";s:6:"cityid";s:5:"_type";a:3:{s:6:"cityid";s:7:"int(11)";s:9:"city_name";s:8:"char(50)";s:9:"parent_id";s:6:"int(3)";}}